How to set Text in MaskedTextBox in C#?
In C#, MaskedTextBox control gives a validation procedure for the user input on the form like date, phone numbers, etc. Or in other words, it is used to provide a mask which differentiates between proper and improper user input. In MaskedTextBox control, you can set the text in the MaskedTextBox using the Text Property which will be displayed to the user. It is a default binding property for MaskedTextBox class. The strings retrieve from this property are formatted using the format properties like Mask, TextMaskFormat, etc. You can set this property in two different ways:
1. Design-Time: It is the easiest way to set the text in the MaskedTextBox as shown in the following steps:
- Step 1: Create a windows form as shown in the below image:
Visual Studio -> File -> New -> Project -> WindowsFormApp
- Step 2: Next, drag and drop the MaskedTextBox control from the toolbox on the form as shown in the below image:
- Step 3: After drag and drop you will go to the properties of the MaskedTextBox and set the text in the MaskedTextBox as shown in the below image:
Output:
2. Run-Time: It is a little bit trickier than the above method. In this method, you can set the text in the MaskedTextBox control programmatically with the help of given syntax:
public override string Text { get; set; }
The value of this property is of System.String type, which is will be displayed to the user. The default value of this property is empty. The following steps show how to set the text in the MaskedTextBox dynamically:
- Step 1: Create a MaskedTextBox using the MaskedTextBox() constructor is provided by the MaskedTextBox class.
// Creating a MaskedTextBox MaskedTextBox m = new MaskedTextBox();
- Step 2: After creating MaskedTextBox, set the Text property of the MaskedTextBox provided by the MaskedTextBox class.
// Setting the text m.Text = "w3wiki";
- Step 3: And last add this MaskedTextBox control to the form using the following statement:
// Adding MaskedTextBox control on the form this.Controls.Add(m);
Example:
using
System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Data;
using
System.Drawing;
using
System.Linq;
using
System.Text;
using
System.Threading.Tasks;
using
System.Windows.Forms;
namespace
WindowsFormsApp38 {
public
partial
class
Form1 : Form {
public
Form1()
{
InitializeComponent();
}
private
void
Form1_Load(
object
sender, EventArgs e)
{
// Creating and setting the
// properties of the Label
Label l1 =
new
Label();
l1.Location =
new
Point(413, 98);
l1.Size =
new
Size(176, 20);
l1.Text =
" Example"
;
l1.Font =
new
Font(
"Bell MT"
, 12);
// Adding label on the form
this
.Controls.Add(l1);
// Creating and setting the
// properties of the Label
Label l2 =
new
Label();
l2.Location =
new
Point(242, 135);
l2.Size =
new
Size(126, 20);
l2.Text =
"Phone number:"
;
l2.Font =
new
Font(
"Bell MT"
, 12);
// Adding label on the form
this
.Controls.Add(l2);
// Creating and setting the
// properties of MaskedTextBox
MaskedTextBox m =
new
MaskedTextBox();
m.Location =
new
Point(374, 137);
m.Text =
"w3wiki"
;
m.TextAlign = HorizontalAlignment.Right;
m.Size =
new
Size(176, 20);
m.Name =
"MyBox"
;
m.BorderStyle = BorderStyle.Fixed3D;
m.BackColor = Color.LightBlue;
m.ForeColor = Color.HotPink;
m.Font =
new
Font(
"Bell MT"
, 18);
// Adding MaskedTextBox
// control on the form
this
.Controls.Add(m);
}
}
}
Output:
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